Kennewick, Washington Weather:
Tuesday, September 15, 2026
Cloudy Weather
Day 86°
Night 61°
Precipitation 10 %
Wind 4 mph
UV Index (0 - 11+) 5
Weather Forecast History
Last Year's Weather on This Day (September 15, 2025)
Night

Day

79°

Night

50°

Wind

5 mph

Precipitation

1 %